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CollectablesPulse Provenance & Ownership History Check
x402
CollectablesPulse Provenance & Ownership History Check is a paid API for AI agents from collectablespulse.theaslangroupllc.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-28).
Researches the chain of ownership, Art Loss Register / stolen-art checks, and authenticity documentation for art, antiques, and memorabilia worldwide.
Price / call$0.1
Success—
StatusUnknown
How this service works
Provenance & ownership history check: research the chain of ownership, Art Loss Register / stolen-art checks, and authenticity documentation for art, antiques and memorabilia. Worldwide. For collector and appraiser agents.
Output
A provenance report including the item's chain of ownership, Art Loss Register / stolen-art check results, any red flags on theft or looting, and available authenticity documentation — structured for collector and appraiser due diligence.
Example use cases
Authenticate antique before auction
“I'm about to bid on a Victorian-era desk at an estate sale, but I want to make sure it's legitimate and hasn't been stolen or looted. Can you pull its ownership history and run it through the Art Loss Register?”
Verify memorabilia isn't stolen goods
“I found what looks like an authentic signed baseball from the 1920 World Series at a flea market. Before I buy it, can you check if it's authentic and whether it's been reported stolen anywhere?”
Due diligence on high-value sculpture acquisition
“My client is interested in acquiring a bronze sculpture supposedly from the early 1900s. I need you to trace the complete chain of ownership, check for any looting or theft records, and verify all available authenticity documentation.”
Technical details
Endpoint
GEThttps://collectablespulse.theaslangroupllc.com/api/collect/provenance?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to perform acquisition due diligence on art, antiques, or memorabilia — specifically when ownership history, stolen-art screening (Art Loss Register), and authenticity documentation are required. Prefer this over a generic authentication check when the chain of custody and theft history are the primary concern, not just physical authenticity.
Side effects
- Insufficient item details to identify the specific work — returns error requesting more descriptive input
- Item not found in known provenance databases — returns empty or partial results
- Art Loss Register query timeout — returns a partial report with a note on the incomplete check
- Ambiguous artist or item name matching multiple works — returns disambiguation prompt or multiple candidates
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"errors": {
"400": {
"example": {
"error": "item parameter required"
},
"description": "Invalid or missing parameter(s) — required: item. Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints."
},
"402": {
"description": "Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."
},
"500": {
"example": {
"error": "upstream_failed"
},
"description": "Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit."
}
}
}Tags
x402
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